get_layer_list

Return the list of all layers defined in the current PCB board.

SERVERKiCAD-MCP-Server SOURCEmixelpixx/kicad-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mixelpixx-kicad-mcp-server/get-layer-list.md

WHAT IT DOES

What get_layer_list does on KiCAD-MCP-Server

AI agents call get_layer_list to retrieve information from KiCAD-MCP-Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_layer_list is rated Low

This tool queries and returns existing layer information from a PCB board. It has no side effects, does not modify data, execute operations, or cause irreversible changes. It is purely a data retrieval function, fitting the Read category. Severity is low because misuse poses minimal risk—an AI agent retrieving layer lists cannot cause harm to the design or system.

From the tool's definition Tool name 'get_layer_list' and description 'Return the list of all layers defined in the current PCB board' indicate a query operation that retrieves data without modifying or executing anything.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_layer_list safely

PolicyLayer is an MCP gateway: it sits between your AI agents and KiCAD-MCP-Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_layer_list, this is the rule to start with:

get_layer_list Allowed

get_layer_list is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_layer_list": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect KiCAD-MCP-Server, apply this rule, and every get_layer_list call is checked against it from then on.

FAQ

Questions about get_layer_list

What does the get_layer_list tool do? +

Return the list of all layers defined in the current PCB board. It is categorised as a Read tool in the KiCAD-MCP-Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_layer_list? +

Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for get_layer_list: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches KiCAD-MCP-Server. Nothing to install.

What risk level is get_layer_list? +

get_layer_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_layer_list? +

Yes. Add a rate_limit block to the get_layer_list rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block get_layer_list completely? +

Set action: deny in the PolicyLayer policy for get_layer_list. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides get_layer_list? +

get_layer_list is provided by the KiCAD-MCP-Server MCP server (mixelpixx/kicad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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